THE HISTEE BEETLES. 617 



tfite, the first and second sti-i£e very short, basal. Front tibiaj with four 

 teeth. Length 2 mm. 



Throughout the State; frer|uent. Hibernates beneath the bark 

 of walnut, poplar and elm logs; on tree fungi in summer. Febru- 

 ary 10-September 21. 



1181 (3567). Pabomalus semi>>'lhjm Erichs., loc. cit. 



Oval, rather convex. Piceous black, shining. Thorax as in hixtiidfiis. 

 Elytra more coareely punctured than thorax, with traces of two striiie at 

 base, and a short, faintly impressed sutural stria at middle. Length 2 mm. 



Southern half of Ktate ; scaree. Occurs with the preceding and 

 may be sexually different only. Hibernates. February 10-Octo- 

 ber 4. 



Anapleiis viarc/inal iis Lee, broadly oval, piceous, coarsely punc- 

 tured, elytra with traces of third dorsal stria at l)ase, length 1.5 

 mm., is known from Illinois and the District of Columbia. 



Tribe III. SAPRINI. 

 The different genera of this tribe vary much in size and form, 

 but all agree in lacking a lobe on the front of the prosternum. The 

 members of the largest genus, Sapiinus, live mostly in carcasses, 

 especially those of dead fish along the shores of rivers and lakes. 

 The others occur mostly beneath bark and stones. Six of the seven 

 genera ai-e represented in the State. 



KEY TO THE INDIANA GENERA OF SArEINI. 



a. Antennfe inserted under the margin of the front, in repose received in 

 cavities at the sides of the prosternum ; size larger, 2.5 or more mm. 



VIII. Sapkixus. 

 (((/. Antennce inserted on the front, in repose received in cavities beneath 

 the sides of the thorax in front of the coxae; size usually very small. 

 6. Eyes finely granulated, not prominent ; length 1.5-2 mm. 



c. Thorax with deep lateral groove ; presternum deeply bisulcate ; 



tibial not toothed. IX. Plegadekus. 



CO. Thorax without deep lateral groove ; form cylindrical ; tibise 



toothed. X. Teeetrius. 



6&. Eyes coarsely granulated and very convex; form oval; length less 



than 1.5 mm. 



(/. Hind tarsi .'j-joiuted : scutellnni iuvisiljle. XI. r.AcANius. 



(]il. Hind tarsi 4-jointed. 



e. Scutellum distinct. XII. Aceitus. 



cc. Scutellum invisible. XIII. .aiixTES. 



VIII. Saprixus Eriehs. 1834. (t^r., "rotten.") 



The members of this genus resemble in form those of the larger 

 species of Ilisler, but almost all of them have the thorax mirI elytra, 

 in part, at least, more coarsely punctate. The fifth dorsal stria 



